Polyester hot melt adhesive
AssigneeEastman Kodak Company
InventorBobby J. Sublett
Life of this patent
Estimating the term…
Abstract
Polyesters useful as hot melt adhesives are prepared from selected dicarboxylic acids and selected diols, which include a critical range of polyoxyethylene glycols. In a first embodiment of the invention, the polyester is prepared from terephthalic acid, isophthalic acid, adipic acid, 1,4-butanediol, ethylene glycol, and 20 to 45 weight percent of the selected polyoxyethylene glycols. In a second embodiment of the invention, the polyester is prepared from terephthalic acid, acipic acid, 1,6-hexanediol, ethylene glycol, and 2 to 40 weight percent of the selected polyoxyethylene glycols.
Claims4
A polyester having an inherent viscosity of at least 0.5 consisting essentially of
- A. a dicarboxylic acid component which is
- 1. 25 to 65 mole percent terephthalic acid,
- 2. 10 to 25 mole percent isophthalic acid,
- 3. 25 to 50 mole percent adipic acid,
- B. a diol component which is
- 1. 60 to 25 mole percent 1,4-butanediol,
- 2. 40 to 75 mole percent ethylene glycol, and
- 3. 20 to 45 weight percent, based on the weight of the polyester, of a polyoxyethylene glycol selected from the group consisting of ##STR5## where x is in the range of 1 to 127 and y is in the range of 1 to 110, ##STR6## where x is in the range of 16 to 612, and
- (c) H(OCH.sub.2 CH.sub.2).sub.x --OH
- where x is in the range of 4 to 180.
A polyester having an inherent viscosity of at least 0.5 consisting essentially of
- A. a dicarboxylic acid component which is
- 1. 40 to 60 mole percent terephthalic acid,
- 2. 15 to 25 mole percent isophthalic acid,
- 3. 25 to 40 mole percent adipic acid,
- B. a diol component which is
- 1. 60 to 40 mole percent 1,4-butanediol,
- 2. 40 to 60 mole percent ethylene glycol, and
- 3. 30 to 40 weight percent, based on the weight of the polyester, of a polyoxyethylene glycol selected from the group consisting of ##STR7## where x is in the range of 1 to 127 and y is in the range of 1 to 110, ##STR8## where x is in the range of 16 to 612, and
- (c) H(OCH.sub.2 CH.sub.2).sub.x --OH
- where x is in the range of 4 to 180.
A polyester having an inherent viscosity of at least 0.5 consisting essentially of
- A. a dicarboxylic acid component which is
- 1. 100 to 60 mole percent terephthalic acid,
- 2. 0 to 40 mole percent adipic acid,
- B. a diol component which is
- 1. 70 to 30 mole percent 1,6-hexanediol,
- 2. 30 to 70 mole percent ethylene glycol, and
- 3. 2 to 40 weight percent, based on the weight of the polyester, of a polyoxyethylene glycol selected from the group consisting of ##STR9## where x is in the range of 1 to 127 and y is in the range of 1 to 110, ##STR10## where x is in the range of 16 to 612, and
- (c) H(OCH.sub.2 CH.sub.2).sub.x --OH
- where x is in the range of 4 to 180.
A polyester having an inherent viscosity of at least 0.5 consisting essentially of
- A. a dicarboxylic acid component which is
- 1. 80 to 60 mole percent terephthalic acid,
- 2. 20 to 40 mole percent adipic acid,
- B. a diol component which is
- 1. 60 to 40 mole percent 1,6-hexanediol,
- 2. 40 to 60 mole percent ethylene glycol, and
- 3. 5 to 30 weight percent, based on the weight of the polyester, of a polyoxyethylene glycol selected from the group consisting of ##STR11## where x is in the range of 1 to 127 and y is in the range of 1 to 110, ##STR12## where x is in the range of 16 to 612, and
- (c) H(OCH.sub.2 CH.sub.2).sub.x --OH
- where x is in the range of 4 to 180.
Dependencies are inferred from the claim text.